What To Do About "Paternal Discrepancy"?

Earlier this month, a British review of scientific studies dealing with paternity testing found that about 1 in 25 fathers are unknowingly rearing children who are not genetically theirs.

As genetic screening for diseases and forensic matters becomes more widespread, doctors and testing centers will coincidentally discover that some fathers and children are not genetically related. The Reason Online poll question for today is: Should doctors and testing centers be required to tell fathers and children about any "paternal discrepancy" they uncover?